Dish-washing machine.



J, F. HILSCHER.

DISH WASHING MACHINE.

APPLICATION FILED NOV. 26, 1910.

Patented Feb. 13, 1912.

2 SHEETS-SHEET 1.

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J. F. HILSCHER.

DISH WASHING MACH E.

APPLICATION FILED NOV. 26. 1910.

Patented Feb. 13, 1912.

2 SHEETS-SHEET 2.

s7v7v/? J'fifl/VF/V/ASC/V? W/ T/VESSES JOHN F. mnscnnn, or ST. PAUL, MI NESOTA.

DISH-WASHING MACHINE.

Specification of Letters Patent.

Patented Feb. 13,1912.

Application filed November 26, 1910. Serial No. 594,388.

construction so that it can be put upon the market at a small price, and which-is particularly adapted for use in ordinary households, thus enabling the members of the family to quickly and expeditiously wash, at one operation, all of the dishes used at the .family meal. :The machine may, without chan e, be made on a larger scale so as to be adapted for use in hotels, restaurants, or public eating houses.

The invention consists generally in the constructions and combinations hereinafter described and particularly pointed out in the or construction. As here shown it is made in the form of an upright frame having at one end a bearing box 3, in which a suitable shaft 4 is supported, so as to be free to rotate therein, and having at the other end a support for a stationary or stub shaft 5 secured to said frame, in any suitable manner.

Mounted so as to rotate freely with the shaft 4 and upon the shaft 5 is a drum composed of wooden heads S and 9, and double cylindrical walls 10 and 11, the ends of said walls being secured in any suitable manner to the heads of the drum. I prefer to form the interior wall 10 of the drum of sheet zinc, and the outer wall 11 of any suitable sheet metal, and to separate the two Walls by strips of asbestos 14. An air space is thereby provided between the two walls of the drum, which are separated by said air space and said strips of asbestos, and by this arrangement I prevent transmission of -when the machine is in use.

heat from the hot water within the drum to the outer wall of said drum. This outer wall will, therefore, always be kept cool even At a short distance above its center, the drum is divided longitudinally, thereby. forming a lid section, which is hinged at 16 to the main body section of the drum, and a suitable packing 18 is arranged on the meeting edges of the two sections of the drum so as to form a water-tight joint between them when the sections are closed together. A hasp or other fastening 19 is provided, by which the lid section of the drum is securely clamped to the main body section when the device is in use. At one end the drum is provided with a box 20 through which the stationary stub shaft 5 passes, forming a water-tight joint therewith. The inner end of this stub shaft is preferably wedge shaped in crosssection. At its other end the drum has the short shaft 4 secured to it by means of the plate 21 and'the bolts 22, and the end of the shaft 4, projecting through the wall of the drum, forms a stud 23 that extends a short distance into the interior of said drum. A suitable crank 23 maybe applied to the shaft 4 for the purpose of rotating said drum.

I have provided the frame of the machine with an upwardly projecting bracket or standard 24. This standard carries near its upper end a block which is formed with a slot 24. This slot at itsinner-end has an upward extension. The lid section of the drum is provided with a stud 25. The rotating drum is stopped with the lid at the upper side and when this lid is opened, the stud 25 may be placed in the slot 24. Inasmuch as the lid is hingedly connected with the other section of the drum, any unequal I pressure on the drum cannot rotate the drum in a counter-clockwise direction as viewed in Fig. 2, as the stud 25 will be carried against the under face of the slot. On the series of longitudinal ribs 26,-to each of which is secured a plate- 27. These'plates are wider than the thickness of the rib 26 and preferably conform to the circular shape of the interior of the drum, and thereby form, with the rib, a longitudinally extending pocket at each side of said rib. I

4 Arranged within the drum is an open tray or basket 28, the ends of which are preferably made of substantially semi-circular wooden plates, and to which a sheet of wire netting 29 is secured, thereby forming a substantially semi-cylindrical tray or basket, with solid endsand a wire netting circumferential wall. This tray is provided at one end with an inverted V-shaped bearing 30, and at the other end with an inverted U-shaped bearing 31. The tray is set down into the drum so that the end of the stub shaft 5 and the stud 23, forming the end of the shaft 4, are engaged by the bearings 30 and 31. The bearing 30, being of V- shape, engages the wedge shaped end of the rigid shaft 5 and locks said basket in position so as to prevent it from turning with the drum. The stud 23, while it supports the ends of the basket, turns freely in 'the'U'- shaped bearing on the end of said basket.

Arranged in the basket is a movable rack, provided with cross bars 32, alongitudinally connecting bar 33 and spring dish holders 34. The fiat dishes, such as plates, saucers, etc., may be stood nearly upright between the spring holders 34:, while other dishes may be piled in the bottom of the basket between the ends ofsaid rack, with the soiled portions thereof uppermost."

In using the device the dishes are placed in the rack, preferably, in the manner specified. A suitable, amount of hot water is turned into the drum, the lid section of which is then closed and locked. The drum is rotated slowly in one direction and then in the other. The longitudinal pockets on the interior surface of the drum each take up a supply of water, and carry it up to a point above the top .of the basket, when it is poured over the top of the asket on to the dishes held in said basket and tray. After turning the drum slowly a number of revolutions in one direction, its motion is reversed and it is turned slowly a number of revolutions in the other direction. These operations are repeated for a period of two or three minutes when the lid section is opened, the water is drawn OE and a small amount of hot water is then poured over the.

dishes for the purpose ofrinsing them and they will then be found to be thoroughly clean. 1

v I prefer to provide a bulge or extension 35 in the drum near one end thereof in which is provided a drain opening which maybe closed'by a suitable plug 36 thereby giving an incline or slant to the bottom of the drain when stationary. When the drum is in a stationary position with the drain opening downward and the plug is removed, the water will run out through this opening into a suitable receptacle which may be placed beneath. The plug 36 is preferably mounted on a spring. wire stem 37 arranged to slide on the interior of the drum head, being guided by suitable staples 39. This stem is provided with the fiat loops 40 which add to its resiliency and with an upper loop 41 which catches under the stud 23 and holds the plug in position.

In the head, or lid part of the cylinder, and preferably near the line of division from the lower part, I prefer to insert a vent tube 42 of suitable size, so as to permit the escape of the steam from the hot water used in washing, 'and prevent undue expansion of the cylinder.

I claim as my invention: 1. In a dish washing machine, the combination of a frame, a water-tight drum ro-' tatably supported in the frame, said drum having dish -holder within the drum, means on the inside of the drum adapted to carry the -water above the dish holder and discharge the water into the dishholder, and means tatably supported in the frame, said drum having a hinged lid section, a stationary dish holder within the drum, means on the inside 'of thedrum adapted to carry the water above the dish holder and discharge the water into the dish holder, a bracket carried by the frame, said bracket being provided with a downwardly inclined slot having an ofi'set extension, and a stud carried by the lid section of the drum adapted to enter the slot when the lid is raised, whereby the drum is held against rotation in either direction.

In witness whereof, I have hereunto set my hand this 11th day of November 1910.

GENEvmvn SoRENsEN, I EDWARD A. PAUL.

a hin ed -lid section, a stationary 

